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Grommet

A grommet and fitting hole technology, applied in electrical components and other directions, can solve the problems of low insertion force, time-consuming, unstable installation posture, etc., and achieve the effects of equal fixing force, rotation prevention, and reliable positioning

Inactive Publication Date: 2012-01-11
FURUKAWA ELECTRIC CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, not only the fitting operation is time-consuming, but also the installation posture may be unstable because the grommet is fixed obliquely in the fitting hole.
The technique of Patent Document 2 is based on the premise that the grommet deforms when the soft grommet made of rubber or elastic material is fitted. It is difficult to expect a low insertion force even if the concave part for temporary fixing is provided, and the instability of the mounting posture cannot be eliminated.

Method used

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Embodiment Construction

[0034] Embodiments of the present invention will be described below based on the drawings.

[0035] figure 1 is a side view showing an instance of a grommet, figure 2 It is a plan view, and the grommet 1 is composed of a hard grommet inner cylinder 2 made of synthetic resin and a soft grommet outer cylinder 3 made of rubber. First, the grommet inner cylinder 2 is an oblong cylindrical body in plan view that fits into the fitting hole of the mounting plate described later, and the surface in the minor axis direction ( figure 2 The position A) is divided into two split bodies 4, 4, and the locking piece (not shown) protruding from the split surface of the split body 4 on one side is inserted into the recess and set on the other side In the concave portion (not shown) of the split surface of the split body 4, a combined structure is formed. Label 5 is the flange part (as image 3 , 4 shown).

[0036]In addition, two locking claws 6 as locking portions, one temporary fixin...

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Abstract

The invention provides a grommet, which is positioned in a tabling hole and reliably mounted on a proper position with shaking even if under the condition that the size accuracy of the tabling hole is low. In the grommet (1), a plurality of centering claws (8) are arranged on an outer surface of a grommet inner member (2) and configured to elastically abut on an insertion hole (21) at an inner edge thereof so as to position the grommet inner member (2) in a center of the insertion hole (21) when lock portions (6) are clamped in the insertion hole (21). On the other side, a plurality of temporary anchor claws (7) are arranged on the outer surface of the grommet inner member (2) and configured to engage with the inner edge, thereby supporting the grommet (1) in an axial direction before the lock claws (6) are clamped at the inner edge of a burr (22) when the grommet (1) is inserted in the insertion hole (21).

Description

technical field [0001] The present invention relates to a grommet for maintaining a state in which automotive wiring and the like penetrate a mounting plate. Background technique [0002] For example, when wiring for a motor vehicle is passed through a fitting hole opened in a mounting plate, a grommet is provided in the fitting hole to prevent damage to the wiring and waterproof and soundproof the fitting hole. For example, as disclosed in Patent Document 1, the grommet is composed of a hard grommet inner cylinder made of resin and a soft grommet outer cylinder made of rubber, and the inner grommet cylinder is inserted into the fitting hole with play. It has a cylindrical shape, and a plurality of locking pawls (locking parts) that can be engaged with the inner edge of the fitting hole protrude from the outer surface of one end side, and a flange part is provided along the circumferential direction on the other end side. On the other hand, the grommet outer cylinder has a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G3/22
Inventor 内堀正纪狩野恭渡边大助三谷哲也
Owner FURUKAWA ELECTRIC CO LTD
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